Development Of Five Phase Induction Motor Speed Using Field Oriented Control Method

Ahmad Khairi, Ariffin (2015) Development Of Five Phase Induction Motor Speed Using Field Oriented Control Method. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

Multiphase induction motor drive is considered for various applications. Utilization of AC machines with a number higher than three phase can be enabled using power electronic in electrical drives. The 5-phase motor drive has many advantages compared to 3-phase such as reducing amplitude of torque and current pulsation. The aim of this project is to control the speed of five phase induction motor using Field Oriented Control (FOC). A five phase induction motor has high fault tolerance. The main application of multiphase induction motor are ship propulsion, traction (including electric and hybrid electric vehicles) and electric aircraft. In order to run a five phase induction motor, the drive system need to be designed. Five phase source supplied from five-phase Voltage Source Inverter (VSI) space vector modulation has chosen as the switching scheme due to its easiness of digital implementation. Space Vector Modulation (SVM) gives effective control of multiphase VSI because of higher switching voltage capacity compare to its companion. The Field Oriented Control (FOC) has been selected as a method to control the speed of five phase induction motor. FOC controlling the current space vector directly in the d-q rotor reference frame. Once the stator current is transformed, the control becomes rather straight forward. Two PI controller is used for d and q. This will maximize the torque efficiency and increase the speed. The FOC will also provides smoother motion at slow speeds as well as efficient operation at high speeds. The result is shown in simulation and can be experimental on real five phase induction motor with five phase inverter.

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